What is protein and do I need it?
Protein is the material which your body requires to recover and rebuild. Whether your goal is toning, cutting, building muscle, or you play intense sport, you will require the amino acids found within protein to recover and/or build muscle.
Why are there so many? Are they different?
Different proteins will provide specific benefits, for example whey protein isolate (WPI) digests quickly and is best post workout, whereas whey protein concentrate (WPC) digests at a slower rate, and is more suited for between meals.